20448978

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{709}}^1$

素因数の和:767

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 28626222

約数列:

[1, 2, 3, 6, 11, 19, 22, 23, 33, 38, 46, 57, 66, 69, 114, 138, 209, 253, 418, 437, 506, 627, 709, 759, 874, 1254, 1311, 1418, 1518, 2127, 2622, 4254, 4807, 7799, 9614, 13471, 14421, 15598, 16307, 23397, 26942, 28842, 32614, 40413, 46794, 48921, 80826, 97842, 148181, 179377, 296362, 309833, 358754, 444543, 538131, 619666, 889086, 929499, 1076262, 1858998, 3408163, 6816326, 10224489, 20448978]

約数ペア:

[(1, 20448978), (2, 10224489), (3, 6816326), (6, 3408163), (11, 1858998), (19, 1076262), (22, 929499), (23, 889086), (33, 619666), (38, 538131), (46, 444543), (57, 358754), (66, 309833), (69, 296362), (114, 179377), (138, 148181), (209, 97842), (253, 80826), (418, 48921), (437, 46794), (506, 40413), (627, 32614), (709, 28842), (759, 26942), (874, 23397), (1254, 16307), (1311, 15598), (1418, 14421), (1518, 13471), (2127, 9614), (2622, 7799), (4254, 4807)]